Hi Roel, welcome to the forum.Having driven a Likamobile for several hundred miles, I have found the following concerning fuel, water etc, consumption:-Water--working out at about 1 gallon a mile, so the range is about 10 miles on full tanks. However, you will only get this on fairly long runs as the efficiency goes up when the whole system is hot.Fuel--depends a little on which fuel: I use central heating oil (no tax) and I have to use a slightly larger nozzle size, so it uses a bit more of a cheaper fuel (also I can raid the domestic c/h tank). Works out at about 8 to 10 miles a gallon, so range can be up to 50 miles.Battery--I use each battery singly with a change over switch as I don't trust myself not to run the battery system out and get stranded,--I once get a tow back home from the local postman. However I suspect that running the batteries together in parallel gives the batteries more endurance as they are running at a more efficient discharge rate. Say around 8 to 10 hours endurance.So, in general, I get more running time when using it on the road for longer trips than on the rally field with a lot of stop/starting.Good luck with your Lyka.TBps:- being a light vehiclea lot of this depends on the weight carried and the terrain, hills etc putting up the consumption.

Roel,My car must be very different to TB's, I'm sure I hold about 20 gallons of water when full, giving me an 18 to 20 miles range, so we are agreed on the 1 mile to the gallon consumption.When touring with mine through areas of unknown water availability, I carry a little 12v bilge pump and a rolled-up flat hose, making every wet ditch, stream or river a water source. I have a picture of mine parked on a bridge in Scotland filling-up from the stream below where the rise involved must be 12 feet plus !